25494925 has 24 divisors (see below), whose sum is σ = 33390720. Its totient is φ = 19272000.

The previous prime is 25494913. The next prime is 25494929. The reversal of 25494925 is 52949452.

It is not a de Polignac number, because 25494925 - 2⁷ = 25494797 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25494929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57856 + ... + 58294.

It is an arithmetic number, because the mean of its divisors is an integer number (1391280).

Almost surely, 2^25494925 is an apocalyptic number.

25494925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25494925 is the 2525-th decagonal number.

It is an amenable number.

25494925 is a deficient number, since it is larger than the sum of its proper divisors (7895795).

25494925 is a wasteful number, since it uses less digits than its factorization.

25494925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 568 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 25494925 is about 5049.2499442987. The cubic root of 25494925 is about 294.3187381866.

The spelling of 25494925 in words is "twenty-five million, four hundred ninety-four thousand, nine hundred twenty-five".